As the virus makes copies of itself, errors may creep in, changing its genetic makeup. Researchers are trying to determine if the changes are significant.
The latest batch of new emojis is coming soon and it contains some wins for science-lovers. But scientists have mixed feelings about some of the new images from nature.
At first, tests were positive for porcine epidemic diarrhea virus. Then something strange happened. The pigs stopped testing positive for that virus — but kept getting sick.
About 30 percent of Americans are predisposed to celiac disease, but only 1 percent get the disease. A new study finds that a common virus may play a role in determining who gets the disease.